Hoisting sling



Feb.. Z3 1926.

E.- L. SMITH HIsTING sLING Filed April 25 -'L attachable sling' member for Patented Feb. 2?, i926.

PATENT OFFICE.

r"J;*.."LI)}1."1`|' L. SMITH, OF MARSHFIELD, OREGON.

HOISTING SLING.

Application filed April 25, 1925.

To ZZ @IJ/tom 'it may concer/n Be it lrnown that l, ELnnN L. SMLTH, a citizen of the United Sta-tes, residing at lilarshtield, in t-he county of Coos and State of Oregon, have invented certain new and useful Improvements in Hoisting Slings, of which the following is a specilication.

rllhe present invention relates to new and useful improvementsin hoisting slings, more particularly adapted for use in connection with the hoisting of rocks, large stones, and the like.

Itis the object ot the present invention to provide a compara-tively simple and readily stones and the like, which is adapted for engagement with a. hoistingl means, whereby the stone may be hoisted `and conveyed to a desired position, and then released when rested on the support.

Another important object. of the invention is to provide a device of this nature, which is easily engageable with a roch or the like, and which is easily disengageable therefrom.

Ai still further object of the invention is to provide a rattling sling of this nature, which may be manufactured at a comparatively low cost, and yet be strong', durable, reliable, not likely to become easily out of order, and otherwise well adapted for the purpose for which it is designed.

Tith the above and other objects and advantages in view, the invention resides more particularlv in the novel combination, formation and arrangement of parts more particularly hereinafter described and claimed.

ln the drawing Figure 1 is an elevation of the hoisting sling; embodying the features of my inven tion.

.Figure 2 is taken at right angles ure 1.

Referring to the drawing in detail, it will be seen Vthat l designates a plate having a centrally located opening therein, preferably provided with a rolled edge. The ends of this plate terminate in eyes 3, to which are pivotally attached links 4. Jaws 5 are pivotallv engaged with the links 4 and are preterably curved throughout their length. On

another elevation thereof, to that shown in Fig the inner sides of the extremities of the jawsv 5 there are disposed pointed spurs 6, which are adapted to engage the roch which 1s ln- -the combination and Serial No. 25,845.

dicated in the drawing. Shields 7 are constructed with offset ends fixed to the outsides of the jaws 5, so that the major portions oi" the shields are spaced from the jaws. A pair of sheaves 8 is mounted between each j aw and its respective shield The jaws 5 are apertured, as at 9, intermediate their ends, adjacent the upper ends ot the shields 7. rThe numeral 10 designates a U-shaped member, in the ii'orm of a clevis or the like, which has jonrnaled between its ends, a pair ot sheaves 11. A continuous cable 12 is trained over the sheaves 11, through the opening 2, through the apertures 9, and over the sheaves S, to form a slingl portion 13, which will be disposed about the rock, as is indicated to advantage in Figure The weight of the rock, when supported between the sling portions 13 oit the endless cables 1:2 will tend to dra-w this cable tightly about the rock and draw the jaws toward each other, so that the spurs 6 digr into the rock. A cable 15 has its ends attached to intermediate portions of the jaws 5, as at 16, and when the rochr is delivered, so to rest on a support, the cable 15 may be lifted up, thus releasing the jaws and sling` portions 13, from the rock. The sling' portions 13 und the jaws may be very easily engaged with the rock, as is apparent.

It is thought that the construction, operation, and advantages of this sling' will now be clearly understood, without a more detailed d-escription thereof.

rlhe present embodiment ot the invention has been disclosed, merely by way ot eX- ainple, in order to show an embodiment, which will attain all of the features of advantage enumerated as desirable in the statement of the invention and the above description. lt will be apparent that numerous changes in the details ot construction. and in arrangement of parts may be resorted to, without departing trom the spi rit or scope ot the invention as hercinafter claimed or sacriiicing any of its advantages.

A light cable hanging' from the main derrick is provided with a hook on the suspended end for the purpose ot hooking on to the bail and hoisting' on saine after disengaging from the rock with the idea of jaws spread and retaining the slack as it: comes ott the rock.

holding the scribed, a plate havin` Having thus described my invention, what l elaiin as new is:

l. In a sling structure of the class dean opening, a pair of jaws having` openings pivotallvinounted on the ends of the plate, sheaves journaled on the extremities of thel jaws, a clevis, sheaves supported in the clevis, and an endless cable trained over the sheaves in the clevis, through the openings in the jaws, and over the sheaves on the jaws for forming` sling portions. Y

2. In a sling' structure of the class described, a plate, lin is pivoted to the ends ot ythe plate, said plate provided with an. interniediateljI disposed opening, jaws pivoted to the links, shields provided' on theI outside of the jaws and having` their interniedia'tevportionsspaced freni the jaws, sheaves journaled between the jaws and the shields, said jaws providedA with apertures, spurs on the inner sides of' the extremities ofthe jaws, a Ll-shaped clevis, a pair ot sheaves journaled in the Ushaped clevis, and an endlesscable trained over the sheaves in the clevis, through the opening` in the plate, through the apertures in the jaws, and over the sheaves between the jaws and the shields.

n a sling structure of the class describedv a plate, links pivoted to the ends ot' the plate, said plate provided with an interinedfiately disposed opening, aws pivoted to the links, shields provided on the outside oi the jaws and having their intermediate portions spaced from the jaws, sheaves j ournaled between the'jaws and the shields, said jaws provided with apertures, spurs on the inner sides of the extremities of' the jaws, a U-shaped clevis, a pair of sheaves journaled in the U-shaped clevis, trained over the sheaves in the clevis, through the opening in the plate` through the apertures in ther jaws, and over the sheaves between` the jaws and the shields, and. e second cable attached its ends t0 the intermediate portions o' the jaws.

l[n testimony whereof l my sigijlm ture.

ELDEN L. entre,

and an endless cable l 

